How does wolfberry improve eyesight?

Wolfberry (Lycium barbarum) supports vision primarily through its high concentration of zeaxanthin and beta-carotene. These carotenoids accumulate in the retina, specifically the macula, acting as antioxidants that filter harmful blue light and neutralize free radicals. Traditional Chinese Medicine attributes this effect to the herb's ability to nourish liver blood, which is believed to directly benefit the eyes. Evidence level: C.

Can I take goji berries with warfarin?

You should avoid consuming wolfberry (goji berry) if you take warfarin. Wolfberry contains compounds that may increase the risk of bleeding by enhancing the anticoagulant effects of warfarin. Case reports suggest it can elevate INR levels, potentially leading to hemorrhage. Patients on blood thinners should consult a healthcare provider before adding this herb to their diet. Evidence level: C.

What is the recommended daily dosage for dried goji berries?

The standard adult dosage for dried wolfberries is 10 to 15 grams daily, roughly equivalent to a small handful. For concentrated extracts, a dosage of 500 to 1000 mg per day is common. The berries can be eaten raw, cooked in soups, or steeped as a tea. It is best to start with a lower amount to assess digestive tolerance. Evidence level: Traditional.

Is wolfberry safe to eat during pregnancy?

Yes, wolfberry is generally considered safe for consumption during pregnancy when eaten in moderate food amounts. In Traditional Chinese Medicine, it is used to nourish liver and kidney yin. However, pregnant women should avoid high medicinal doses and consult a healthcare provider before use, especially if taking other medications or experiencing digestive issues. Evidence level: Traditional.

What are the side effects of eating goji berries?

While generally well-tolerated, wolfberry may cause mild gastrointestinal upset in some individuals, particularly when consumed in large quantities. Rare cases of hypersensitivity or allergic skin reactions have been reported. People with high fever or diarrhea should avoid this herb as it may exacerbate these conditions according to Traditional Chinese Medicine principles. Evidence level: Traditional.

Wolfberry (Lycium barbarum)

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Wolfberry (Lycium barbarum), also known as goji berry, is a traditional Chinese medicinal herb and functional food used to promote health and treat various diseases [PMID:33907670, PMID:38107149].

Background

Lycium barbarum is a genus of the Solanaceae family, where the fruits, roots, stems, and leaves are utilized for both food and medicinal purposes [PMID:38107149, PMID:34083720].

Traditional uses

In Traditional Chinese Medicine (TCM), it is used to enhance immune system function, improve eyesight, protect the liver, boost sperm production, improve circulation, and treat tinnitus, impotence, spermatorrhea, and blood deficiency [PMID:33907670, PMID:38657878, PMID:41059192].

Active compounds

Key bioactive components include Lycium barbarum polysaccharides (LBPs), carotenoids (such as zeaxanthin dipalmitate), polyphenols, betaine, flavonoids, glycopeptides, and phenolamides [PMID:31163996, PMID:37282868, PMID:38138534, PMID:38541744, PMID:38657878, PMID:41059192].

Mechanism of action

Mechanisms include inhibition of the PI3K/AKT1 signaling pathway in lung cancer [PMID:36591458], inhibition of the ERK, AKT, and CyclinD pathways in oral cancer [PMID:36761830], and regulation of the AMPK/SIRT1/PGC1α signaling pathway to inhibit muscle atrophy [PMID:38778385]. It also acts by reducing oxidative stress, inhibiting lipid peroxidation and ferroptosis in the brain [PMID:37182278, PMID:39644762], and increasing the abundance of Akkermansia muciniphila to increase YAP1 expression in the liver [PMID:36468767].

Clinical evidence

Evidence AGlucose and Lipid Metabolism

Daily consumption of LBP significantly regulates serum triglyceride (TG), fasting blood glucose, and low-density lipoprotein (LDL) [PMID:34213407]

Evidence BPeriodontitis

Evaluated as a mouthwash compared to chlorhexidine for managing periodontitis [PMID:39640061]

Evidence DFemale Fertility

Aqueous extract significantly increased pregnancy and live birth rates in naturally aged female mice [PMID:39224078]

Evidence DMale Reproductive Injury

Protective effects against anti-tuberculosis drug-induced reproductive injury in mice [PMID:40761284]

Evidence DMuscle Atrophy

Gouqi-derived nanovesicles (GqDNVs) inhibited dexamethasone-induced muscle atrophy in mice [PMID:38778385]

Evidence DAnxiety Disorders

Wolfberry glycopeptide (LbGp) relieved anxiety-like and depressive behaviors in chronic restrain stress mice [PMID:37182278]

Safety & adverse effects

Most herbs and supplements can be safely taken in moderation, but some reports indicate risks of bleeding events when used concurrently with certain medications [PMID:32478963].

Drug interactions

Wolfberry is listed among herbs and dietary supplements that may interact with warfarin, with some reports indicating potentiation and an increased risk of bleeding [PMID:32478963].

Dosage & administration

TCM suggests preparation as a decoction or ground into a powder and mixed with other herbs [PMID:33907670]. Consult a healthcare provider.

Evidence summary

Evidence ranges from high-level meta-analyses for metabolic regulation to preliminary animal and in-vitro studies for neuroprotection, oncology, and reproductive health.

PubMed sources

1.PMID: 38778385 (2024) — Gouqi-derived nanovesicles (GqDNVs) inhibited dexamethasone-induced muscle atrophy associating with AMPK/SIRT1/PGC1α signaling pathway. · Journal of nanobiotechnology
2.PMID: 32478963 (2021) — Warfarin and food, herbal or dietary supplement interactions: A systematic review. · British journal of clinical pharmacology
3.PMID: 33907670 (2021) — Health benefits of wolfberry (Gou Qi Zi, Fructus barbarum L.) on the basis of ancient Chineseherbalism and Western modern medicine. · Avicenna journal of phytomedicine
4.PMID: 39224078 (2024) — Lycium barbarum berry extract improves female fertility against aging-related oxidative stress in the ovary. · Food & function
5.PMID: 36591458 (2022)

Wolfberry

Sources & Citations